Kinematic Compatibility of a Wrist Robot With Cable Differential Actuation: Effects of Misalignment Compensation via Passive Joints
Kinematic Compatibility of a Wrist Robot With Cable Differential Actuation: Effects of Misalignment Compensation via Passive Joints
复制标题
具有电缆差速驱动的腕式机器人的运动兼容性:通过被动关节进行不对中补偿的效果
DOI:
10.1109/tmrb.2021.3123528
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Sergi, Fabrizio
中科院分区:
文献类型:
--
作者:
Chishty, Haider A.;Zonnino, Andrea;Farrens, Andria J.;Sergi, Fabrizio
We present the UDiffWrist (UDW), a low-impedance 2-DOF wrist exoskeleton featuring a cable-differential transmission. To investigate the effect of different design strategies for achieving kinematic compatibility, we developed two versions of this robot: One version (UDW-C) achieves kinematic compatibility only in the case of perfect alignment between human and robot joints. The second version (UDW-NC) connects the human and robot via passive joints to achieve kinematic compatibility regardless of alignment between human and robot joints. Through characterization experiments, we found that the UDW-NC was more robust to misalignments than the UDW-C: the increase in maximum interaction torque associated with misalignments was greater for the UDW-C than the UDW-NC robot (p = 0.003). However, the UDW-NC displayed greater Coulomb friction (p < 0.001). Further, Coulomb friction increased more for the UDW-NC than the UDW-C in the presence of misalignments between the human and robot axes (p < 0.001). We also found that torque transfer was more accurate in the UDW-C than in the UDW-NC. These results suggest that for the small (10 deg) 2-DOF wrist movements considered, the advantages of the UDW-NC in terms of kinematic compatibility are likely overshadowed by the negative effects in friction and torque transfer accuracy.
登录
查看更多内容
影响因子:
1.8
作者:
L. Leonard;D. Sirkett;G. Mullineux;G. Giddins;A. Miles
通讯作者:
A. Miles
DOI:
10.1109/tnsre.2007.903899
发表时间:
2007-09-01
影响因子:
4.9
作者:
Krebs, Hermano Igo;Volpe, Bruce T.;Hogan, Neville
通讯作者:
Hogan, Neville
影响因子:
2
作者:
Campolo, Domenico;Formica, Domenico;Keller, Flavio
通讯作者:
Keller, Flavio
DOI:
10.1109/icorr.2011.5975339
发表时间:
2011-08
期刊:
2011 IEEE International Conference on Rehabilitation Robotics
影响因子:
--
作者:
B. Dehez;J. Sapin
通讯作者:
B. Dehez;J. Sapin
DOI:
10.1109/icorr.2013.6650485
发表时间:
2013-06-01
期刊:
IEEE ... International Conference on Rehabilitation Robotics : [proceedings]
影响因子:
--
作者:
Dunning, A G;Herder, J L
通讯作者:
Herder, J L